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Finding the Third Proportional to 858.73 and 1,305.18

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Solution

The third proportional to 858.73 and 1,305.18 is: 1,983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.73 : 1,305.18 = 1,305.18 : x
  2. Step 2: Convert to fraction form
    858.73/1,305.18 = 1,305.18/x
  3. Step 3: Cross multiply
    858.73x = 1,305.18 × 1,305.18
  4. Step 4: Simplify right side
    858.73x = 1,703,483.82
  5. Step 5: Solve for x
    x = 1,703,483.82/858.73
  6. Step 6: Final answer
    x = 1,983.73

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.